Define variable in macro than calling that macro inside another macro

I would like to define variables in one macro then I wolud like to call that macro inside another.

A made new module "Module1! and tried this code:

Sub Myvars()
rp="A"
End Sub

Sub Callsub()
Call Module1.Myvars
Cells(3,3)=rn
End Sub

But it doesn't work. Can you help me please?